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Updated: Aug 31, 2025
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Measurements of Soil Carbon by Neutron-Gamma Analysis in Static and Scanning Modes
Published on: August 24, 2017
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EMANATION OF RADON-222 FROM DIFFERENT SOIL TYPES AND SOIL GROUPS
Terézia Eckertová1, Karol Holý1, Monika Müllerová1
1Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynská Dolina F-1, 841 04 Bratislava, Slovak Republic.
Radiation Protection Dosimetry
|August 25, 2022
Summary
This study measured radon-222 emanation coefficients (Ke) in soils. Soil moisture significantly impacts radon emanation, especially in clay-rich soils, influencing potential radon exposure risks.
Area of Science:
- Environmental Science
- Geochemistry
- Radiological Protection
Background:
- Radon-222 (Rn-222) is a naturally occurring radioactive gas.
- Understanding radon emanation from soils is crucial for assessing indoor radon exposure.
- Soil properties, such as particle size and moisture content, influence radon transport.
Purpose of the Study:
- To measure the radon-222 emanation coefficient (Ke) in various soil types.
- To establish a database of Ke values for dried soils based on particle size.
- To investigate the relationship between soil moisture and radon emanation.
Main Methods:
- Utilized an accumulation method for measuring the 222Rn emanation coefficient (Ke).
- Collected and analyzed 18 different soil samples, classifying them by particle size.
- Examined the moisture dependence of Ke for seven selected soil samples.
Main Results:
- Ke values for dried soils ranged from 0.083 to 0.234.
- Identified two distinct trends in radon emanation dependence on moisture, linked to soil texture.
- Sandy soils showed a weak moisture dependence (max 15% increase per 5% moisture), while clayey soils exhibited a significant increase (up to 60%).
Conclusions:
- Soil texture is a key factor determining the impact of moisture on radon emanation.
- The findings highlight the importance of considering soil moisture content in radon risk assessments.
- A comprehensive database of soil Ke values aids in predicting environmental radon levels.
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